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The 360-degree mounting capability ensures adaptability in confined mechanical rooms where clearance is limited
42" WC sensitivity
OEM York gaskets are manufactured to specific durometer and thickness tolerances that generic parts often miss
Built for rigorous commercial boiler maintenance
Lennox 49L04 Sight Glass 321702-401 The 360-degree mounting capability ensuresThe Lennox 49L04 Sight Glass is a heavy duty moisture and liquid indicator designed for precise refrigerant monitoring in high pressure commercial and residential HVACR systems. This moisture indicator sight glass features a high visibility element that provides an immediate visual diagnostic of the system's internal chemistry. As a critical liquid line sight glass, it allows technicians to verify refrigerant charge levels by identifying bubbles that
